33. Directional DrillingPETE Well DrillingSlide 1 PETE 411 Well Drilling Lesson 33 Directional Drilling.

Presentación del tema: "33. Directional DrillingPETE Well DrillingSlide 1 PETE 411 Well Drilling Lesson 33 Directional Drilling."— Transcripción de la presentación:

1 33. Directional DrillingPETE 411 - Well DrillingSlide 1 PETE 411 Well Drilling Lesson 33 Directional Drilling

2 33. Directional DrillingPETE 411 - Well DrillingSlide 2 Directional Drilling u When is it used? u Type I Wells u Type II Wells u Type III Wells u Directional Well Planning & Design u Survey Calculation Methods IIIIII

3 33. Directional DrillingPETE 411 - Well DrillingSlide 3 Read ADE Ch.8 (Reference) HW #15 due 11-12-01 HW #16 due 11-16-01

4 33. Directional DrillingPETE 411 - Well DrillingSlide 4 Inclination Angle , I Direction Angle , A

5 33. Directional DrillingPETE 411 - Well DrillingSlide 5

6 33. Directional DrillingPETE 411 - Well DrillingSlide 6 Max. Horiz. Depart. ?

7 33. Directional DrillingPETE 411 - Well DrillingSlide 7

8 33. Directional DrillingPETE 411 - Well DrillingSlide 8

9 33. Directional DrillingPETE 411 - Well DrillingSlide 9

10 33. Directional DrillingPETE 411 - Well DrillingSlide 10

11 33. Directional DrillingPETE 411 - Well DrillingSlide 11

12 33. Directional DrillingPETE 411 - Well DrillingSlide 12 Type IType IIType III

13 33. Directional DrillingPETE 411 - Well DrillingSlide 13 xx yy I I r r LL

14 33. Directional DrillingPETE 411 - Well DrillingSlide 14

15 33. Directional DrillingPETE 411 - Well DrillingSlide 15 Fig. 8.11

16 33. Directional DrillingPETE 411 - Well DrillingSlide 16

17 33. Directional DrillingPETE 411 - Well DrillingSlide 17 N18E N55W S20W S23E Azimuth Angle

18 33. Directional DrillingPETE 411 - Well DrillingSlide 18

19 33. Directional DrillingPETE 411 - Well DrillingSlide 19 Example 1: Design of Directional Well Design a directional well with the following restrictions: Total horizontal departure = 4,500 ft True vertical depth (TVD) = 12,500 ft Depth to kickoff point (KOP) = 2,500 ft Rate of build of hole angle = 1.5 deg/100 ft Type I well (build and hold)

20 33. Directional DrillingPETE 411 - Well DrillingSlide 20 Example 1: Design of Directional Well (i) Determine the maximum hole angle required. (ii) What is the total measured depth (MD)? (MD = well depth measured along the wellbore, not the vertical depth)

21 33. Directional DrillingPETE 411 - Well DrillingSlide 21 (i) Maximum Inclination Angle

22 33. Directional DrillingPETE 411 - Well DrillingSlide 22 (i) Maximum Inclination Angle

23 33. Directional DrillingPETE 411 - Well DrillingSlide 23 (ii) Measured Depth of Well

24 33. Directional DrillingPETE 411 - Well DrillingSlide 24 (ii) Measured Depth of Well

25 33. Directional DrillingPETE 411 - Well DrillingSlide 25 * The actual well path hardly ever coincides with the planned trajectory * Important: Hit target within specified radius

26 33. Directional DrillingPETE 411 - Well DrillingSlide 26 What is known? I 1, I 2, A 1, A 2,  L  =  MD 1-2 Calculate  = dogleg angle DLS =  L

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28 33. Directional DrillingPETE 411 - Well DrillingSlide 28 (20)